The spinous process of C7 usually projects directly posteriorly. Unlike typical cervical vertebrae, the spinous process of C7 is not bifid. The funicular portion of the ligamentum nuchae attaches to the single posterior tip of the C7 spinous process.
Where are bifid spinous processes?
A bifid spinous process is a feature of a typical cervi- cal vertebra such as C3–C6. It has been rare for past research studies to re- port bifid spinous processes in the C7 vertebra. An exception is a single study which reports a non-bifid spinous process in 98% of cases [3].
Where do bifid spinous process occur and what are they?
The spinous process of a typical cervical vertebra is short and bifid posteriorly. It is bifid because it develops from two separate secondary centers of ossification. This morphology is unique to cervical spinous processes.
Does C2 have a bifid spinous process?
The second cervical vertebra is the axis (Fig. 3). Its vertebral body is formed by fusion with the vertebral body of the atlas to form the odontoid process (or dens), which is completely separate from the atlas. The laminae of the axis are very well developed and blend into a bifid spinous process.
Which structures articulate with vertebral Demifacets?
The superior demifacet of a thoracic vertebra articulates with the corresponding rib (costovertebral joint). This rib articulates again with the costal facet on the transverse process (costotransverse joint). The inferior demifacet articulates with the rib below.
Which spinous process is most prominent?
The spinous process (SP) of the seventh cervical vertebra (C7) is characterized as the most prominent, which makes it an anatomical landmark for the recognition of other SPs.
Where is C6 7 on the spine?
The C6 C7 spinal motion segment is located in the lower part of the cervical spine and consists of the C6 and C7 vertebrae, and the anatomical structures connecting them. This segment helps provide neck flexibility, supports the cervical spine and head, and protects the spinal cord and nerve pathways.
Where is C5 6 and C6 7 located?
The C5-C6 spinal motion segment (located in the lower cervical spine just above the C7 vertebra) provides flexibility and support to much of the neck and the head above.
What attaches to C2 spinous process?
The strong spinous process of C2 gives attachment to inferior oblique and rectus capitis posterior major, bulky portions of the semispinalis cervicis, spinalis cervicis, interspinalis and multifidus.
What bones does the sacrum articulate with superiorly?
The superior aspect of the sacrum, referred to as the sacral promontory, articulates superiorly with the L5 vertebral body of the lumbar spine. This arrangement forms the lumbosacral joint, which is reinforced by iliolumbar and lumbosacral ligaments.
Is C2 bifid?
The axis is formed by a body with the attached dens, two lateral masses, a posterior neural arch (formed by the pedicle and a thick lamina), and a large spinous process, which is commonly bifid.
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